DE68914075T2 - Schutzschaltung für ein magnetoresistives Element. - Google Patents

Schutzschaltung für ein magnetoresistives Element.

Info

Publication number
DE68914075T2
DE68914075T2 DE68914075T DE68914075T DE68914075T2 DE 68914075 T2 DE68914075 T2 DE 68914075T2 DE 68914075 T DE68914075 T DE 68914075T DE 68914075 T DE68914075 T DE 68914075T DE 68914075 T2 DE68914075 T2 DE 68914075T2
Authority
DE
Germany
Prior art keywords
magnetoresistive element
current
voltage
coupled
protection circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE68914075T
Other languages
German (de)
English (en)
Other versions
DE68914075D1 (de
Inventor
Stephen Alan Jove
Klaas Berend Klaassen
Calvin Shizuo Nomura
Peppen Jacobus Leonardus Van
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HGST Netherlands BV
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE68914075D1 publication Critical patent/DE68914075D1/de
Publication of DE68914075T2 publication Critical patent/DE68914075T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/40Protective measures on heads, e.g. against excessive temperature 
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002Special dispositions or recording techniques
    • G11B2005/0005Arrangements, methods or circuits
    • G11B2005/001Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
    • G11B2005/0018Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers by current biasing control or regulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Heads (AREA)
DE68914075T 1988-09-28 1989-09-20 Schutzschaltung für ein magnetoresistives Element. Expired - Fee Related DE68914075T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/250,784 US4879610A (en) 1988-09-28 1988-09-28 Protective circuit for a magnetoresistive element
SG150794A SG150794G (en) 1988-09-28 1994-10-17 Protective circuit for magnetoresistive element

Publications (2)

Publication Number Publication Date
DE68914075D1 DE68914075D1 (de) 1994-04-28
DE68914075T2 true DE68914075T2 (de) 1994-10-20

Family

ID=26664435

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68914075T Expired - Fee Related DE68914075T2 (de) 1988-09-28 1989-09-20 Schutzschaltung für ein magnetoresistives Element.

Country Status (6)

Country Link
US (1) US4879610A (fr)
EP (1) EP0361781B1 (fr)
JP (1) JPH0772921B2 (fr)
DE (1) DE68914075T2 (fr)
HK (1) HK139294A (fr)
SG (1) SG150794G (fr)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4987514A (en) * 1989-02-15 1991-01-22 Hewlett-Packard Company Method and apparatus for preventing parasitic electrical discharges in magnetic disk drives
US5103353A (en) * 1990-05-01 1992-04-07 International Business Machines Corporation Low noise amplifier with short circuit protection for signals from magnetoresistive element
US5142425A (en) * 1990-08-09 1992-08-25 Hewlett-Packard Company Disk drive in which magnetic head-to-disk capacitive coupling is eliminated
US5122915A (en) * 1990-09-26 1992-06-16 Minnesota Mining And Manufacturing Company Low-noise preamplifier for magneto-resistive heads
US5204789A (en) * 1991-01-31 1993-04-20 International Business Machines Corporation Low noise voltage-biasing amplifier for magnetoresistive element
US5323278A (en) * 1992-09-17 1994-06-21 International Business Machines Corporation Low noise amplifier circuit for magnetoresistive sensors for fast read-write switching in low supply voltage applications
US5309295A (en) * 1992-10-08 1994-05-03 International Business Machines Corporation Method and apparatus for biasing a magneto-resistive head
US5296975A (en) * 1992-10-09 1994-03-22 International Business Machines Corporation High-transition-rate, low-supply-voltage write driver circuitry for magnetic inductive write head
MY112702A (en) * 1992-10-30 2001-08-30 Sony Corp Reproducing circuit for a magnetic head.
US5327303A (en) * 1992-12-18 1994-07-05 Seagate Technology, Inc. MR preamplifier having feedback loops for minimizing differential low frequency components and regulating common mode low frequency components of the preamplifier output signal
JPH077196A (ja) * 1992-12-29 1995-01-10 Eastman Kodak Co 磁界センサ及び磁界検知方法
JP2994522B2 (ja) * 1993-02-22 1999-12-27 富士通株式会社 磁気抵抗素子用プリアンプ
US5398144A (en) * 1993-02-25 1995-03-14 Vtc Inc. Bias generator for a low voltage differential read amplifier
JP2553316B2 (ja) * 1993-03-02 1996-11-13 インターナショナル・ビジネス・マシーンズ・コーポレイション データ記憶ディスク・ドライブ装置
BE1005586A0 (nl) * 1993-05-10 1993-11-09 Philips Electronics Nv Optekeninrichting voorzien van een temperatuurafhankelijke schrijfstroomregeling.
US5426542A (en) * 1994-01-21 1995-06-20 Seagate Technology, Inc. Electronically coupled high-impedance magnetoresistive preamplifier
US5497111A (en) * 1994-12-22 1996-03-05 International Business Machines Corporation Peak detection circuit for suppressing magnetoresistive thermal asperity transients in a data channel
EP0720150B1 (fr) * 1994-12-30 2003-10-15 STMicroelectronics, Inc. Transducteur résistif symétrique, circuit de polarisation et ses procédés
US5770968A (en) * 1994-12-30 1998-06-23 Sgs-Thomson Microelectronics, Inc. Differential amplifier with proxy load for control of output common mode range
US5761009A (en) * 1995-06-07 1998-06-02 International Business Machines Corporation Having parastic shield for electrostatic discharge protection
JP3384651B2 (ja) * 1995-07-17 2003-03-10 富士通株式会社 電源制御回路及び記憶装置
US6057972A (en) * 1995-11-03 2000-05-02 International Business Machines Corporation Current source for a magnetoresistive head with variability and selectable slew rate
US5877911A (en) * 1996-03-13 1999-03-02 International Business Machines Corporation Magneto-resistive head pre-amplifying circuit for avoiding output voltage transients
US5995311A (en) * 1996-04-30 1999-11-30 Texas Instruments Incorporated Head switch sequence to protect magneto-resistive (MR) head
US5914630A (en) * 1996-05-10 1999-06-22 Vtc Inc. MR head preamplifier with output signal amplitude which is independent of head resistance
US5917680A (en) * 1996-06-24 1999-06-29 Read-Rite Corporation Magnetoresistive head with magnetic bias level control
WO1998009274A1 (fr) * 1996-08-30 1998-03-05 Marlowe Christian P Procede et appareil d'enregistrement magnetique utilisant une decharge induite de plasma
US5812019A (en) * 1997-01-10 1998-09-22 Vtc Inc. Open-loop MR biasing circuit with high power supply and common mode rejection
US6512654B2 (en) 1997-10-03 2003-01-28 Matsushita Electric Industrial Co., Ltd. Magnetic disk driving apparatus with bearing fixed with conductive adhesive
US6014281A (en) * 1997-12-04 2000-01-11 International Business Machines Corporation Using a read element and a read/write coupling path to detect write-safe conditions
US6219195B1 (en) 1998-01-29 2001-04-17 Marvell Technology Group Ltd. Low-noise magneto-resistive amplifier using CMOS technology
US6067220A (en) * 1998-04-02 2000-05-23 Pemstar, Inc. Shunt for protecting a hard file head
US6252735B1 (en) 1999-02-25 2001-06-26 International Business Machines Corporation Voltage-biasing, voltage-sensing differential preamplifier for magnetoresistive elements
US6687097B1 (en) 2000-03-22 2004-02-03 Pemstar, Inc. Electrostatic protection for magnetic heads
US7006313B2 (en) * 2002-06-25 2006-02-28 Texas Instruments Incorporated Circuit and method to match common mode flex impedance and to achieve symmetrical switching voltage outputs of write driver
DE10244905A1 (de) * 2002-09-25 2004-04-08 Austriamicrosystems Ag Regelvorrichtung mit einem Regelkreis und einem Sensor und Verfahren zum Betrieb der Regelvorrichtung
US6847501B2 (en) * 2002-11-06 2005-01-25 International Business Machines Corporation Method and apparatus for providing matched differential MR biasing and pre-amplification
US20050259344A1 (en) * 2003-08-26 2005-11-24 Motomu Hashizume High output impedance biasing for magnetoresistive elements
US7151393B2 (en) * 2004-11-05 2006-12-19 Guzik Technical Enterprises High-speed write driver
JP5080411B2 (ja) * 2008-09-19 2012-11-21 エイチジーエスティーネザーランドビーブイ ディスク・ドライブ及びヘッド・スライダ上の素子のコモン電位調整方法
US9966094B1 (en) * 2016-09-14 2018-05-08 Marvell International Ltd. Quadratic current slew control circuit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053343A1 (fr) * 1980-11-28 1982-06-09 Hitachi, Ltd. Circuit de reproduction et d'amplification pour tête magnéto-résistive
EP0081240B1 (fr) * 1981-12-09 1989-06-28 Matsushita Electric Industrial Co., Ltd. Tête magnétique à films minces
DE3435867A1 (de) * 1984-09-29 1986-04-10 Bosch Gmbh Robert Differentialsensor
US4712144A (en) * 1985-08-20 1987-12-08 International Business Machines Corporation Method and apparatus for reading recorded data by a magnetoresistive head
US4706138A (en) * 1986-04-14 1987-11-10 International Business Machines Corporation Amplification of signals produced by a magnetic sensor
US4786993A (en) * 1986-06-30 1988-11-22 International Business Machines Corporation Voltage amplifier for constant voltage biasing and amplifying signals from a MR sensor

Also Published As

Publication number Publication date
SG150794G (en) 1995-03-17
EP0361781A3 (fr) 1992-01-15
JPH0294103A (ja) 1990-04-04
JPH0772921B2 (ja) 1995-08-02
EP0361781A2 (fr) 1990-04-04
US4879610A (en) 1989-11-07
HK139294A (en) 1994-12-16
EP0361781B1 (fr) 1994-03-23
DE68914075D1 (de) 1994-04-28

Similar Documents

Publication Publication Date Title
DE68914075T2 (de) Schutzschaltung für ein magnetoresistives Element.
DE69103321T2 (de) Rauscharmer Verstärker mit Kurzschlussschutz für Signale von einem magnetoresistiven Element.
DE3781471T2 (de) Schaltung fuer die vorspannung eines magnetoresistiven sensors und fuer die verstaerkung der erregten signale.
DE69629549T2 (de) Anordnung mit einem magnetschreibkopf und schreibverstärker mit kapazitiver, vorwärtsgekoppelter kompensation
DE69309776T2 (de) Sense FET und schneller Verstärker
DE60016374T2 (de) Schaltkreis zur reduzierung und optimierung von schreib-leseübergangszeiten in magnetischen aufzeichnungsgeräten
DE2718491C2 (de) Schaltungsanordnung zur Verstärkung der Signale eines elektromagnetischen Wandlers und zur Vorspannungserzeugung für den Wandler
DE2851410C3 (de) Elektronische Umschalteinrichtung
EP0176708A1 (fr) Circuit de protection à hystérésis contre les surcharges thermiques
DE69025497T2 (de) Betriebsverstärker mit niedrigem Vorspannungsstrom und hoher Anstiegsgeschwindigkeit
DE68911708T2 (de) Bandabstand-Referenzspannungsschaltung.
DE19919945B4 (de) Kopfleseverstärkerschaltung
DE1142188B (de) UEbersteuerungssichere Impulsverstaerker- und Spitzenspannungsdetektorschaltung mit hoher Ansprechempfindlichkeit
DE1218504B (de) Schaltungsanordnung fuer Abfuehlverstaerker
DE3832448A1 (de) Messverstaerker mit programmierbarer verstaerkung
DE3003123C2 (fr)
DE2541197C2 (de) Widerstandsleseverstärker
DE1424528A1 (de) Leseschaltung mit erhoehter Ablesegeschwindigkeit fuer den eine magnetisierbare Oberflaeche spurweise abtastenden,bewickelten Lesekopf eines Oberflaechenspeichers
DE2647916A1 (de) Nf-leistungsverstaerker
US6066987A (en) Differential cascode magneto-resistance preamplifier with bias bypass
US6219194B1 (en) MR head read amplifier with improved write to read recovery time
DE1219082B (de) Differentialverstaerkerschaltung fuer einen Matrix-Schreib-Lese-Kreis
DE68916019T2 (de) Verstärkeranordnung und verwendung in einer übertragungsleitungsschaltung.
US7339760B2 (en) Integrated bias and offset recovery amplifier
DE2808562A1 (de) Schaltung zur erfassung des auftretens einer gleichstromkomponente im ausgangssignal eines hoerfrequenzverstaerkers

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.

8339 Ceased/non-payment of the annual fee